package Demo2;


class MyThread1 extends Thread{
    @Override
    public void run() {

        while (true){
            System.out.println("hello");
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }

    }
}

public class Demo1 {
    public static void main(String[] args) throws InterruptedException {
        Thread thread=new MyThread1();
        thread.start();

        while (true){
            Thread.sleep(1000);
            System.out.println("hello main");
        }

    }
}
